import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipOutputStream;

public class ZipUtil {

    public static void zipDir(String dir2zip, ZipOutputStream zos) {
        try {
            File zipDir = new File(dir2zip);
            String[] dirList = zipDir.list();
            byte[] readBuffer = new byte[2156];
            int bytesIn = 0;

            for (int i = 0; i < dirList.length; i++) {
                File f = new File(zipDir, dirList[i]);
                if (f.isDirectory()) {
                    String filePath = f.getPath();
                    zipDir(filePath, zos);
                    continue;
                }
                FileInputStream fis = new FileInputStream(f);
                ZipEntry anEntry = new ZipEntry(f.getPath());
                zos.putNextEntry(anEntry);

                while ((bytesIn = fis.read(readBuffer)) != -1) {
                    zos.write(readBuffer, 0, bytesIn);
                }
                fis.close();
            }
        } catch (Exception e) {
        }
    }

    public static void unZipDir(String source, String destDir) {
        try {
//                        String sourceZipFile="E:\\curDir.zip";
//                        String destFolder="E:\\TEST\\";

            String sourceZipFile = source;
            String destFolder = destDir;
            ZipFile zipFile = new ZipFile(sourceZipFile);
            Enumeration<?> enu = zipFile.entries();
            while (enu.hasMoreElements()) {
                ZipEntry zipEntry = (ZipEntry) enu.nextElement();

                String name = zipEntry.getName();
                //System.out.println("NAME   " + name);
                long size = zipEntry.getSize();
                long compressedSize = zipEntry.getCompressedSize();
                System.out.printf("name: %-20s | size: %6d | compressed size: %6d\n",
                        name, size, compressedSize);

                File file = new File(destFolder + name.substring(3, name.length()));
                if (name.endsWith("/")) {
                    file.mkdirs();
                    continue;
                }

                File parent = file.getParentFile();
                if (parent != null) {
                    parent.mkdirs();
                }

                InputStream is = zipFile.getInputStream(zipEntry);
                FileOutputStream fos = new FileOutputStream(file);
                byte[] bytes = new byte[1024];
                int length;
                while ((length = is.read(bytes)) >= 0) {
                    fos.write(bytes, 0, length);
                }
                is.close();
                fos.close();
            }
            zipFile.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String ar[]) {
        try {            

			//Zipping files
			//ZipOutputStream zos = new ZipOutputStream(new FileOutputStream("E:\\curDir.zip"));
			//zipDir("D:\\CRRTAGS", zos);
			//zos.close();

			//UnZipping files
            	unZipDir("E:\\curDir.zip", "E:\\TEST\\");            
            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}